3 days ago · H5 bird flu is widespread in wild birds worldwide and is causing outbreaks in poultry and U.S. dairy cows with several recent human cases in U.S. dairy and poultry workers. While the current public health risk is low, CDC is watching the situation carefully and working with states to monitor people with animal exposures.

Influenza A virus subtype H5N1 (A/H5N1) is a subtype of the influenza A virus, which causes the disease avian influenza (often referred to as "bird flu"). It is enzootic (maintained in the population) in many bird populations, and also panzootic (affecting animals of many species over a …

6 days ago · “H5N1 now presents an existential threat to the world’s biodiversity." 'A nightmare' For the poultry industry, it's been a nightmare. Bird flu has wiped out entire flocks of egg-laying hens – and bears, coyotes, cows and raccoons. On Jan. 17, Georgia confirmed its first H5N1 outbreak at a commercial farm. The spread occurred at a broiler ...

Jan 28, 2025 · "The H5N1 virus is widely circulating across North America, and these viruses can reassort in species that are susceptible to influenza viruses," said S. Mark Tompkins, director of the Center for ...

Nov 4, 2024 · CDC provides an update on its response activities related to the multistate outbreak of avian influenza A (H5N1) virus, or "H5N1 bird flu," in dairy cows and other animals in the United States.

Dec 26, 2024 · Direct avian-to-human HPAI A(H5N1) virus transmission is the predominant means of human infection, although the exact mode and sites of HPAI A (H5N1) virus acquisition in the respiratory tract are incompletely understood.

May 16, 2024 · H5N1 influenza virus infection can cause a range of diseases in humans, from mild to severe and in some cases, it can even be fatal. Symptoms reported have primarily been respiratory, but conjunctivitis and other non-respiratory symptoms have also been reported.

From 2003 to 2024, more than 950 cases of H5N1 bird flu in humans outside the United States were reported to the World Health Organization. About half of those have resulted in death. Visit the CDC’s webpage for the current status. Symptoms for people with bird flu can include:

Jan 15, 2025 · There are many species that are potentially susceptible to highly pathogenic avian influenza (HPAI). In addition to birds and poultry, H5N1 viruses have been detected in some mammals (see list below). Infection may cause illness, …

Dec 31, 2024 · Highly pathogenic avian influenza (HPAI) A (H5N1) emerged in 1997. 1 Since then, it has spread globally by migratory birds, resulting in infections in animals on every continent.